The same visitor can reach your customer support, create enquiries from different channels, and serve them by the other staff agents assigned to channels, resulting in duplicate contacts.
CINNOX offers the Merge Contacts tool to help you identify identical profiles with verified phone number among your External Contact List. You can manually find contact to merge with the visitor profile if you find them as one profile.
You can also select a field from each record if one has information and another does not. The Merge Contact tool allows you to resolve duplicate contacts and have up-to-date information in your Contact list.
Below are some scenarios we can look at for the Merge Contacts.
When the pre-chat form is enabled with phone number verification and contact auto-save enabled or the visitor call via Virtual Number.
A visitor with a verified phone number and the phone number owned by a contact, merging the visitor information with the contact, will appear in the enquiry chat room's room panel as a suggestion.
We identified contact with the same verified phone number as this visitor. Do you want to merge them? displays with the Merge button.
To proceed with the merging:

Visitor w/ identical verified phone number merge with another contact
When the pre-chat form is enabled with phone number verification and contact auto-save enabled or the visitor call via Virtual Number.
A visitor with a verified phone number in which no contact does not own the phone number:
You can still merge the visitor information to an existing contact, provided you know they are just one contact; otherwise, keep the new contact as it is.
To proceed with the merging:

Visitor w/ non-identical verified phone number merge with another contact
When the pre-chat form is enabled without phone number verification and contact auto-save enabled/disabled.
A visitor with unverified can still merge the visitor profile to an existing contact, but ensure you know that they are just one contact profile; otherwise, save the visitor profile as a new contact.
To proceed with the merging:

Visitor w/ unverified phone number merge with another contact
When the pre-chat form is disabled.
A visitor without personal information can still merge the visitor information to an existing contact, but ensure you know they are just one contact profile; otherwise, save the visitor information as a new contact.
To proceed with the merging:

Entered visitor information merged with another contact
All activities and enquiry rooms will be merged and viewed in just one for merge contacts.
For contacts with multiple (closed and ongoing) enquiries when merged with another contact, their enquiries are combined and viewed in one chat room.
You can:

Merged Rooms View for Merged Contacts
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You can only reply to the enquiry handled by you with a status Current, which means it is the room's active enquiry. Others (ongoing, followed-up and closed) are just for reference and are still available in the Recent list.
For a new visitor with or without personal information, you can fill in additional information gathered during the enquiry handle and save them as a new contact.

Save Visitor Information as New Contact